Home / 149,164.12-205,850.28-81,184.78

Finding the Fourth Proportional to 149,164.12, 205,850.28 and 81,184.78

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Solution

The fourth proportional to 149,164.12, 205,850.28 and 81,184.78 is: 112,037.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,164.12 : 205,850.28 = 81,184.78 : x
  2. Step 2: Convert to fraction form
    149,164.12/205,850.28 = 81,184.78/x
  3. Step 3: Cross multiply
    149,164.12x = 205,850.28 × 81,184.78
  4. Step 4: Simplify right side
    149,164.12x = 16,711,909,694.74
  5. Step 5: Solve for x
    x = 16,711,909,694.74/149,164.12
  6. Step 6: Final answer
    x = 112,037.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.